latest on the crisis in syria, with plans for a military strike stalls. Secretary of state kerry is meeting with the russian foreign minister to hammer out a deal to get syria to give up its chemical weapons. Martha, the secretary wants to see if this is a serious proposal. Reporter: He sure does, george. This is really the morning that serious negotiations begin. Secretary kerry right now on the ground in geneva with his russian counterpart, wants to hear specifics from the russians. How these chemical weapons would be stockpiled, inventoried and destroyed. All that would have to happen in the middle of a raging civil war. A senior official sounding somewhat optimistic this morning, george, saying it is doable. Although difficult and complicated. Russian president vladimir putin taking something of an unusual move. Going to "the new york times," speaking directly to the american people, with a challenge for president obama. Reporter: Right to the american people. And picking apart president obama's speech this week, to keep the pressure on syria, by threatening military strikes. Putin writing, it is alarming that military intervention, in internal conflicts in foreign countries has become commonplace nor the united states. Is it in america's long-term interest? I doubt it, says putin. He feels he is winning right now. North korea, starting up their nuclear reactors again. Reporter: Exactly. Satellite photos show this plant which was partially destroyed in 2008. Now, apparently restarted, which means the north koreans could start making even more nuclear weapons. George? Martha raddatz, thanks very

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